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BS ISO 9635-4:2014

BS ISO 9635-4:2014

$142.49

Agricultural irrigation equipment. Irrigation valves – Air valves

Published By Publication Date Number of Pages
BSI 2014 24
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This part of ISO 9635 specifies construction and performance requirements and test methods for air valves, intended for operation in irrigation systems with water at temperatures not exceeding 60 Ā°C, which can contain fertilizers and other chemicals of the types and concentrations used in agriculture.

It is applicable to hydraulically operated air irrigation valves of DN 15 diameter or greater, designed to be directly operated, i.e. the force is applied to the obturator by the float, either directly or via a mechanical linkage. The valves can be operated by a force applied through an adjustable pilot valve.

PDF Catalog

PDF Pages PDF Title
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Design requirements
5 Performance requirements
5.1 General
5.2 Mechanical strength
5.3 Watertightness
9 5.4 Airflow characteristics
10 5.5 Resistance to chemicals and fertilizers
5.6 Endurance
11 6 Conformity assessment
6.1 General
6.2 Type tests
6.3 Control of production process and quality system
12 7 Marking
8 Packaging
13 AnnexĀ A
(normative)

Test method for airflow characteristics of valves with air release function

15 AnnexĀ B
(normative)

Test method for airflow characteristics of valves with air intake function

18 AnnexĀ C
(normative)

Test method for endurance of valves with air intake and/or air release functions

20 Bibliography

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BS ISO 9635-4:2014
$142.49